John krt tsi



UNITED STATES PATENT Orricao JOHN matter, on ST. GALL, SWITZERLAND.

PROCESS OF MAKING EMBROlDERY-LACES.

SPECIFICATION forming part of Letters Patent No. 337,687, dated March 9,I886.

Application filed July 8, 1885. Serial No. 171,020.

To all whom it may concern:

Be it known that I, JOHN KRiisI, a citizen of the Republic ofSwitzerland, residing at St. Gall, in Switzerland, have invented certainnew and useful Improvements in Processes of Making Embroidery-Laces, ofwhich the following is a specification.

My invention has relation to the art of embroidering laces; and itconsists in the improved method of manufacturing the same, ashereinafter more fully described and claimed.

In my improved process the base upon which the embroidery is madeis afabric, which, before the pattern has been embroidered upon it,'istreated at a comparatively low temperature with suitable chemicals,which render it so tender that after the pattern (which may beembroidered with threads of either animal or vegetable fibers, or threadcovered with metal, such as fine gold or silver wire) has beenembroidered upon it, the fabric may be destroyed by subjecting it to ahigh temperature of about 80 centigrade or 176 Fahrenheit, the hightemperature thoroughly destroying the fabric which forms 'the basewithout injuring in the slightest degree the animal or vegetable fiberthreads or the threads covered with metal, which form the pattern.

I will now proceed to describe the process oftreating the fabric; thisprocess being the one which I prefer to employ in the manufacture ofembroidery-laces, although it will be understood that I do not wish toclaim the fabric, per se. in this application. Thefabric, which ispreferably a cotton fabric, is dipped in a bath of diluted sulphuricacid or hydrochloric acid, or any other suitable acid, the said bathbeing composed of one part concentrated acid and twenty-five parts ofWater, and the fabric is thereupon dried in a dark place and at atemperature of about 20 centigrade or 68 Fahrenheit. The fabric thusprepared recovers,in the space of a few days, sufficient strength toallow the lace-pattern to be embroidered upon it with any suitablethreadsuch-as cotton, linen, wool, thread covered with metal, or anyother kind of thread-the pattern being embroidered in such a manner thatthe stitches will support each other when the supporting-base fabric (Nospecimens.)

is removed, and the thread will in no manner be affected by the preparedfabric. After the fabric has been embroidered it is removed to a placehaving a temperature of about 80 centigrade or about 176 Fahrenheit,when the fabric will separate and permit the lacepattern to stand free.

It will be seen that by my improved process of manufacturingembroidery-laces the pattern or lace proper may be embroidered withthreads of either animal or vegetable fiber, or of threads covered withfine gold or silver wire, which is sometimes highly desirable, or ofcombinations of any two or of all three of the above-named classes ofthreads; something which it is impossible to do where the fabric issubjected to an acid bath after being embroidered, or where it isnecessary to treat the threads chemically before embroidering thepattern, as has been heretofore done, as such treatment would infalliblytarnish the threads covered with fine gold or silver wire, whilesubjecting the embroidered fabric to an acid bath after the pattern hasbeen embroidered upon it would injure either the animal or vegetablethreads where the two are employed together in one pattern.

I am aware that in the manufacture of embroidery-laces the threads havebeen chemically treated before embroidering the pattern for the purposeof enabling them to resist the action ofthe agent which is employed todestroy the fabric forming the base, after the pattern has beenembroidered thereon, and I am also aware that a base fabric composed ofvegetable fibers has been embroidered with threads composed of animalfibers, or vice versa, and the base fabric composed entirely of eitheranimal or vegetable fibers has then been chemicallyincinerated in such amanner or by such chemical agents as will destroy all of the animal orvegetable fibers composing the base fabric; but I am not aware thatembroiderylaces have been heretofore manufactured by first chemicallypreparing the fabric in such a manner that it may be destroyed merely bysubjecting it to a certain high degree of temperature, then embroideringit with threads of either animal or vegetable fibers or threads coveredwith fine gold or silver wire, and at last destroying the base fabric bysubjecting it to a high degree of temperature, as herefabric toa drytemperature of about'80 centitofore described. grade or 176 Fahrenheit,which will destroy Having thus described myinvention, I claim the fabricwithout subjecting the sameto the and desire to secure by Letters Patentof the slightest moisture. V I 5 p 5 United States- In testimony whereofI sign this specification, The process of manufacturing embroideryintherpresence of two subscribing witnesses, laces, consisting in dippingthe foundationthis 20th day of June, 1885.

fabric in a bath of acid and water at a tem- JOHN KRfiSI. perature ofabout 20 centigrade or 68 Fahr- Witnesses: [0 enheit, then enibroideringthe said fabric with EMIL BLUM,

suitable threads, and at last exposing the WILLIAM SCHNEIDER.

